Fire-box boiler.



No. '785,4=18. PATENTED MAR. 21, 1905 I J. S. GLENN & H. HENK I FIRE BOX BOILER.

APPLICATION FILED MAR.28,1904.

2 SHEBTS-SHEBT l PATE NTED MAR. 21, 1905. J. S. GLENN & H. HENKE.

FIRE BOX BOILER.

APPLIOATION FILED MAR.28,1904.

No. 785,418.v

lJNrrED STATES Patented March 21, 1905.

PATENT OFFICE.

JOHN S. GLENN, OF WEST OOVINGTON, KENTUCKY, AND HARRY HENKE,

OF CINCINNATI, OHIO.

FIRE-Box BOILER.

SPECIFICATION forming part of Letters Patent No. 785,418, dated March 21, 1905.

A plication fil d March 28, 1904. Serial No. 200,317.

To all whom it may concern:

Be it known that we, JOHN S. GLENN, residing at West Oovington, in the county of Kenton and State of Kentucky, and HARRY HENKE, residing at Cincinnati, in the county of Hamilton and State of Ohio, citizens of the United States, have invented certain new and useful Improvements in Locomotive-Boilers, of which the following is a specification.

Our invention relates to locomotive-boilers.

The object of our invention is to so construct and arrange the interior of the boiler as to render it more economical to construct and maintain, safer, and more economical'in I 5 use of fuel, whereby steam is more rapidly generated and there is less danger of leakage.

Our invention consists in providing a waterspace in the boiler, with entry-chambers at each end thereof, connecting said chambers with a series of horizontal water-tubes within the flue-chamber, communicating with and receiving heat from the fire-box, which is adapted to communicate heat to the water within said tubes and water-space.

Our invention also consists in the details of construction and in the combinationand arrangement of the several parts.

In the drawings, which serve to illustrate our invention, Figure 1 is a longitudinal sec 0 tion of a locomotive-boiler and fire-box, showing our invention. Fig. 2 is a vertical section of front head of boiler on line 2, Fig. 1. Fig. 3 is a vertical section of tube-sheet on line 3 4:, Fig. 1. Fig. 4 is a vertical sec- 5 tion of tube-sheet on the line 5 6, Fig. 1. Fig. 5 is a vertical section of fire-box on the line 7 8, Fig. 1. Fig. 6 is a section of rear head of boiler.

Similar letters refer to similar parts throughout the several views.

Our invention is preferably constructed substantially as shown, and the parts comprising it may be substituted for the construction and arrangement now generally used in locomotive-boilers. In such constructions with our invention installed therein as shown the usual boiler-shell is employed. This is provided at the front end with head A, having suitable manhole a. We provide a water-space G, ex-

tending around the boiler and fire-box with- 5 in the shell, as shown, and at each end of said space an entry-chamber B is provided. These entry-chambers B are so constructed and arranged at each end of the boiler as to form receptacles for the water to enter and be heated when the boiler is in use and also serve as chambers for the workmen to enter for the purpose of securing a full set of water-tubes within the boiler and allowing sufficient space for the workmen to remove and replace watertubes and otherwise repair and clean these parts. The rear chamber is arranged directly over the fire, and the front chamber is arranged directly over the flue chamber, whereby intense heat is communicated directly 5 to both entry-chambers, thus affording much more rapid generation of heat than otherwise. By constructing our entry-chambers B of a size large enough to admit a man therein a tube-sheet sufiiciently large to receive a full set of water-tubes can be used at each end. One object of these entry-chambers is to permit the insertion or removal or repairing and the like of the tubes regardless of the location of the fire-door, whether high or low. 7-5 The upper part of the water-space is larger in cross-section than at the sides and bottom to provide adequate steam-space.

The flue-chamber I, which extends longitudinally through the central part of the boiler 30 from the fire-box H to the smoke-passage b, is separated from the water-space by the wall D, crown-sheet F, and tube-sheets O O. ithin the flue-chamber I we provide a series of tubes E, disposed horizontallyand secured at 5 each end to and through the tube-sheets O O and adapted to communicate with the entry chambers B at each end. Sufiicient space is provided between these tubes to allow free circulation of heat as it escapes from the the 9 boX. By securing the ends of the tubes E in to the fire-box.

2 otherwise.

rangement the danger of leakage is reduced to a minimum. Convenient and easy access to the tubes E is obtained through the manholes a, communicating with the large entry- 5 chambers 13 B at each end.

The bottom sheets of both entry-chambers B B are stayed to the outer shell of boiler by the sling-stays f, attached to the T-bars c.

. The crown-sheet F is stayed to the outside IO shell of boiler by the radial stays e and is also 5 space and tubes and also indirectly by rapid heating and circulation of the water through the tubes to all parts of the water-space, thus producing the requisite steam, with much less fuel and also less damage to the boiler than The smoke passes through the flue-chamber I, smoke-passage b,into the usual smoke-box, and out through the smoke-stack. (Not shown.)

Some of the advantages of our invention are 2 5 protection of the water-tubes from contraction and expansion, the provision of entrychambers in each end to permit convenient and easy access of the workmen in cleaning and repairing the water-tubes and other parts 3 of the boiler, easily removable entry-cham bers, simplicity of arrangement of the watertubes with relation to the entry-chambers for the convenient and easy removal of any one or all of them and replacing same, convenience for thorough washing of tubes and cham- 4 retainer, perfect draft, there being no obstruction of any kind, and elimination of rolling or calking of tubes each trip. Vi e also secure a continuous circulation of water,. the water passing through the tubes from lirebox end to front entry-chamber, this action being produced by the more intense heat at the fire-box end.

In applying our invention to a boiler we make no change whatever in the outside shell- 5 other than in providing manholes.

Ive claim 1. In a locomotive-boiler, a water-space provided with an entry-chamber at each end, water-tubes extending horizontally within the boiler and comm unicating at each end with said entry-chambers, and a lire-box adapted to communicate heat to the water within the watertubes and water-space.

2. In a locomotive-boiler, a water-space having entry chamber at each end, a flue-chamber extending horizontally through said waterspace, a series of water-tubes secured at each end and communicating with the entry-chambers, and a fire-box adapted to communicate 5 heat to said water space and tubes respectively.

3. In a locomotive-boiler having a shell and water-space within the same, a flue-chamber within said water-space having its outlet-passage below the front entry-chamber and leading to the smoke-box, water-tubes within said flue-chamber, tube-sheets at each end of the water-tubes to secure same and separate fluechamber and water-space at the ends, and a fire-box adjacent said water-tubes and waterspace.

4. In a locomotive-boiler, a water-space around the outer part thereof provided with entry-chambers at each end, a flue-chamber extending between said entry-chambers and from the fire-box to the smoke-passage, water-tubes extending horizontally in said fluechamber connecting and communicating with each entry-chamber, a fire-box arranged under one entry-chamber and the adjacent ends of the water-tubes, a smoke-passage arranged under the other entry-chamber and adapted to communicate with the smoke box and outlet.

5. In a locomotive-boiler, a water-space around the outer part thereof provided with entry-chambers at each end, a Hue-chain her extending between said entry-chambers and from the fire-box to the smoke-passage, water-tubes extending horizontally in said flue-chamber connecting and communicating with each entry-chamber, a fire-box arranged under one entry-chamber and the adjacent ends of the water-tubes and smoke-passage arranged under the other entry-chamber and adapted to communicate with the smoke box and outlet and a vertical heat-retainer at the rear of the front entry chamber and within the fluechamber.

6. In a locomotive-boiler, a water-space having entry-chambers at each end, a manhole leading into each entry-chamber through the end of the boiler, a flue-chamber extending horizontally through said water-space, a series of water-tubes secured at each end and communicating with the entry-chambers, and a fire-box adapted to communicate heat to said water space and tubes respectively.

7. In a locomotive-boiler, a shell, a ire-box, a smoke-box, a flue-chamber extending and forming the only opening between said lirebox and smoke-box, a water-space surrounding said flue-chamber within said shell, an entry-cham ber forming part of said water-space in and above said flue-space adjacent said smoke-box whereby said flue-space is con tracted and a heat-retainer is formed therein, an entry-chamber forming part of said waterspace in and above said lire-box, manholes communicating with said entry-chambers and a plurality of water-tubes connecting said ontry-chambers through said flue-chamber.

JOHN S. GLENN. HARRY HENKE.

Witnesses:

JAMES N. RAMsnY, C. W. EARNEs'r. 

